Mockus is remembered for having been convicted in nationally publicized trials for having violated archaic Connecticut and Maine state laws prohibiting blasphemy as a result of his public challenges of certain points of Christian orthodox religious belief.

Initially he worked at coal mines then at a cement factory in Detroit, Michigan.

[2] There he bought a small press and published Lithuanian and Polish brochures and booklets.

The churchgoers would attempt to disrupt the meetings with measures ranging from catcalls to threats of violence.

[3] He was charged with and found guilty of blasphemy in Waterbury, Connecticut, in 1916[5] and in Rumford, Maine, in 1917.

[3] Upon his return he retired from public life and died on October 23, 1939[1] in Oak Forest, Illinois.

For his appeal, Mockus retained Theodore Schroeder of the Free Speech League as his attorney.

Religion, capitalism, and government are a black army and only profiteer from the poor people.

You see here (pointing to a picture of God, Jesus Christ, and the Holy Ghost, which he had caused to be thrown upon a screen) scarecrows.

(8) "You see this fool (pointing to a picture of Jesus Christ upon the cross, with the private parts of his body covered with a cloth, which he had caused to be thrown upon a screen) and you believe in Him.

"[6]Mockus was arrested under Maine's blasphemy law which reads: "Blasphemy may be committed either by using profanely insolent and reproachful language against God, or by contumeliously reproaching Him, His creation, government, final judgment of the world, Jesus Christ, the Holy Ghost, or the Holy Scriptures as contained in the canonical books of the Old and New Testament, or by exposing any of these enumerated Beings or Scriptures to contempt and ridicule, and it is not necessary for the state to prove the doing of all of them.